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🌊 Marine 🌡️ Tropical

Perpetual Chromis

Chromis abadhah Rocha, Pinheiro, Najeeb, Rocha & Shepherd, 2024
Max Length
6.9 cm
Max Weight
Lifespan
Trophic Level
3
Depth
80–120 m
Climate
Tropical
Resilience
High
Vulnerability
17.00/100
Typical Length
Depth Zone
reef

📖 Overview

Collected on a steep slope at 101-118 m, other individuals observed elsewhere at 80-120 m depth. Habitat complexity was medium to high, small crevices and caves, but of low relief, with an apparently high diversity of encrusting sponges .

Scientific Name
Chromis abadhah
Authority
Rocha, Pinheiro, Najeeb, Rocha & Shepherd, 2024
Habitat
Marine
Climate
Tropical
Max Length
6.9 cm
Depth Range
80–120 m
Trophic Level
3
Resilience
High
Vulnerability
17.00/100
Salinity
30–40 ppt

🐟 Physical Description

Dorsal spines (total): 13; Dorsal soft rays (total): 12 - 13; Anal spines: 2; Anal soft rays: 11 - 12. This species is distinguished from its congeners by the following set of characters: D XIII,12-13; A II,11-12; pectoral-fin rays 17-18; tubed lateral-line scales 17; gill rakers 7 + 17-18 = 24-25. Colouration: body pearly white; a large black marking covering anterior two-thirds of anal fin; small black spot on upper edge of pectoral-fin base; without markings on caudal peduncle .Cross section: compressed.

🌀 Behaviour

Behavioural data for Perpetual Chromis is currently being reviewed.

🦐 Diet

Diet information for Perpetual Chromis is currently being compiled.

🥚 Reproduction

Reproduction data for Perpetual Chromis is currently being compiled.

🌍 Habitat & Distribution

Marine; reef-associated; depth range 80 - 120 m . Tropical Indian Ocean: Maldives.

🌿 Ecology

Zone Preferences
🌊 Marine 🪸 Reef Associated
Trophic Level
3±0.1

📐 Morphometrics

Length–Weight Relationship: W = 0.0182 × L3 (TL)
Max TL
6.9cm
Dorsal Spines
13
Dorsal Rays
13
Anal Spines
2
Anal Rays
12

🌡️ Water Parameters & Tolerance

Salinity Range
30–40ppt

📊 Population Risk & Fisheries

Population Resilience
High
Minimum doubling time
Fishing Vulnerability
17.00/100
Low vulnerability
Trophic Level
3
Predator
Climate Zone
Tropical
Described By
Rocha, Pinheiro, Najeeb, Rocha & Shepherd, 2024

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